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【单选题】

What does the DB_FLASHBACK_RETENTION_TARGET parameter configure?（）

A、An upper limit on how far you can flash back the database, depending on the information in the redo logs

B、An upper limit on how far you can flash back the database, depending on the information in the undo tablespace

C、The amount of time for which the flashback data is to be kept in the flash recovery area, provided that there is enough space

D、The amount of time for which the flashback data is guaranteed to be kept in the undo tablespace, provided that there is enough space

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更多“What does the DB_FLASHBACK_RETENTION_TARGET parameter configure?（）”相关的问题

第1题

[] You are working on the APPDB database as a DB A. The database has a default Flashback Data Archive DFLA1 created on it. You issued the following command to drop the Flashback Archive FLA1： DROP FLASHBACK ARCHIVE fla1； What is the effect of this command？（） You are working on the APPDB database as a DB A. The database has a default Flashback Data Archive DFLA1 created on it. You issued the following command to drop the Flashback Archive FLA1： DROP FLASHBACK ARCHIVE fla1； What is the effect of this comm

A、A. The Flashback Archive FLA1 is dropped only if it is empty. B、B. The tablespace having Flashback Archive is dropped. C、C. The Flashback Archive FLA1 is dropped after moving the existing data in it to the default Flashback Archive. D、D. The Flashback Data Archive and historical data are dropped.

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第2题

[单选题] Click the Exhibit button. What is the maximum allowable loss budget between the ONS 15216 Mux (left side) composite output and the ONS 15216 Demux (right side) composite input, with the optical values given in the exhibit? （）(Assume the worst case loss of 4.5 dB for 15216 200 GHz Mux/Demux and ignore power penalties or extra margin.)

A、15dB B、17dB C、21dB D、26dB E、27dB

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第3题

[] What is the most common value of the hysteresis used when estimating margins for log-normal fading? （）

A、A.3dB B、B.35dB C、C.36dB D、D.38dB E、E.20dB

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第4题

[单选题] You are working on the APPDB database as a DBA. The database has a default Flashback Data Archive DFLA1 created on it. You issued the following command to drop the Flashback Archive FLA1: DROP FLASHBACK ARCHIVE fla1,What is the effect of this command?（）

A、The Flashback Archive FLA1 is dropped only if it is empty. B、The tablespace having Flashback Archive is dropped. C、The Flashback Archive FLA1 is dropped after moving the existing data in it to the default Flashback Archive. D、The Flashback Data Archive and historical data are dropped.

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第5题

[] Which of the following is a typical data warehouse query?（）

A、A.What is this customers address? B、B.Does this customer have any unpaid bills? C、C.What is the balance in this customers account? D、D.What are the total sales for each of the last 6 months?

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第6题

[] what does three entries of the diagram mean？给一张show ip bgp如下

A、what does three entries of the diagram mean？给一张show ip bgp如下

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第7题

[单选题] What is the RP for IPv6 multicast address FF76：0130：2001：db8：3811：：2323？（）

A、2001：db8：3811：：1 B、2001：db8：3811：：2323 C、2001：db8：3811：：0130 D、2001：db8：3811：：3 E、2001：db8：3811：：6

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第8题

[单选题] We still do not know （）.

A、where is the trouble B、where does the trouble C、where the trouble lies D、what is the trouble

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第9题

[] You executed the following commands in a database session: What could have caused the recycle bin to clean up?（） You executed the following commands in a database session: What could have caused the recycle bin to clean up?（）

A、A. There is demand for space from the new table B、B. The undo tablespace does not have sufficient free space C、C. The new table name is the same as the table name in the recycle bin D、D. The temporary tablespace that is assigned to you does not have sufficient free space

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第10题

[] Click the Exhibit button. In the exhibit, the Compression > Basic > Endpoints page shows an icon of a red "X" under the tunnel status "IN" column. The error message displays, "No Request Received". What does this indicate?（） Click the Exhibit button. In the exhibit, the Compression > Basic > Endpoints page shows an icon of a red "X" under the tunnel status "IN" column. The error message displays, "No Request Received". What does this indicate?（）

A、A. There are no devices at the remote site. B、B. The remote side does not have QoS enabled. C、C. The remote side is not configured for compression to this endpoint. D、D. The remote side is not configured for decompression to this endpoint.

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